Omron NT20S Operation Manual page 154

Lamps Section 4-6
When a lamp is overlapped with a memory table display
The guide display message for a lamp is a fixed character-string. If you want to
change the lamp guide display in accordance with some condition, overlap the dis-
play area of a numeral memory table or character-string memory table with the
lamp. However, note that different results will be achieved depending on the tim-
ing of the lighting of the lamp and the updating of the memory table. Bear this in
mind when creating the control program.
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